[GiNaC-list] factor() hangs on a simple expression, randomly

[Richard B. Kreckel]

On 12/22/2017 07:31 PM, Vitaly Magerya wrote:
> On 12/22/2017 10:09 AM, Richard B. Kreckel wrote:
>> If the answer to the last two questions is yes, then we might add a stop
>> condition and when that has been reached, try factorizing with an
>> alternative permutation of symbols.
> 
> This may be a reasonable workaround (if it doesn't affect the
> non-hanging cases), but I'd personally be wary of treating a symptom
> without understanding the underlying cause.

Well, I'm unconvinced that this failure is some kind of bug in the
implementation. If it's a problem with the algorithm, it could be worth
trying alternative permutations of symbols. (And, of course, it
shouldn't cause regressions.)

  -richy.
-- 
Richard B. Kreckel
<https://in.terlu.de/~kreckel/>